Move all crates into a crates directory (#1940)

crates/emath/Cargo.toml

@@ -0,0 +1,44 @@
+[package]
+name = "emath"
+version = "0.18.0"
+authors = ["Emil Ernerfeldt <emil.ernerfeldt@gmail.com>"]
+description = "Minimal 2D math library for GUI work"
+edition = "2021"
+rust-version = "1.61"
+homepage = "https://github.com/emilk/egui/tree/master/emath"
+license = "MIT OR Apache-2.0"
+readme = "README.md"
+repository = "https://github.com/emilk/egui/tree/master/emath"
+categories = ["mathematics", "gui"]
+keywords = ["math", "gui"]
+include = ["../LICENSE-APACHE", "../LICENSE-MIT", "**/*.rs", "Cargo.toml"]
+
+[package.metadata.docs.rs]
+all-features = true
+
+[lib]
+
+
+[features]
+default = []
+
+## Enable additional checks if debug assertions are enabled (debug builds).
+extra_debug_asserts = []
+## Always enable additional checks.
+extra_asserts = []
+
+
+[dependencies]
+#! ### Optional dependencies
+
+## [`bytemuck`](https://docs.rs/bytemuck) enables you to cast `emath` types to `&[u8]`.
+bytemuck = { version = "1.7.2", optional = true, features = ["derive"] }
+
+## Enable this when generating docs.
+document-features = { version = "0.2", optional = true }
+
+## [`mint`](https://docs.rs/mint) enables interopability with other math libraries such as [`glam`](https://docs.rs/glam) and [`nalgebra`](https://docs.rs/nalgebra).
+mint = { version = "0.5.6", optional = true }
+
+## Allow serialization using [`serde`](https://docs.rs/serde).
+serde = { version = "1", optional = true, features = ["derive"] }